In the 7th round at Mustajar (behind Kaaba and a little before Rukh-e-Yamaani.) One must stop a little and spread both the hands on the walls of Kaaba and with the face and body touching the wall, should say the following dua :

اَللّٰہُمَّ الْبَیْتُ بَیْتُکَ وَ الْعَبْدُ عَبْدُکَ

Allahuma albaitu baituka walabdu abduka

O Allah! this House is Yours and this creature is Yours

وَ ہٰذَا مَقَامُ الْعَائِذِ بِکَ مِنَ النَّارِ

wahadhaa maqqamul aaidhi bika minnannari.

and this is the place for taking refuge in You from the fire of Hell

Then make confession of your sins for there is no faithful who makes confessions to his Lord in this place without Allah forgiving him, Allah willing, and say :

اَللّٰہُمَّ مِنْ قِبَلِکَ الرَّوْحُ وَ الْفَرَجُ وَ الْعَافِیَۃُ

Allahuma min qibalika-rrawhu walfaraju walaafiyautu.

O Allah! comfort, success and health come form You.

اَللّٰہُمَّ اِنَّ عَمَلِیْ ضَعِیْفٌ فَضَاعِفْہُ لِیْ

Allahuma inna amalii zaiifun fazaifhu lii

O Allah! my devotions are weak and so grant hem strength

وَ اغْفِرْ لِیْ مَا اطَّلَعْتَ عَلَیْہِ مِنِّیْ

waghfirilii mattalata alaihi minni

and forgive me the sins which are so apparent

وَ خَفِيَ عَلٰی خَلْقِکَ اَسْتَجِیْرُ بِاللّٰہِ مِنَ النَّارِ

wakhafiya alaa khalqika astajiiru billahi minnanar.

to You but concealed from Your creatures

Then say :

اَللّٰہُمَّ اِنَّ عِنْدِیْ اَفْوَاجًا مِنْ ذُنُوْبٍ

Allahuma inna indii afwajan min dhunubin

وَ اَفْوَاجًا منْ خَطَایَا وَ عِنْدَکَ اَفْوَاجٌ مِنْ رَحْمَۃٍ

waafwwajan min khatayaa wa indaka afwaajun min rahmatin

وَ اَفْوَاجٌ مِنْ مَغْفِرَۃٍ یَا مَنِ اسْتَجَابَ لِاَبْغَضِ خَلْقِہٖ

waafwaajun min maghfiratin ya manistajab a liabghazi khalqhi

اِذْ قَالَ اَنْظِرْنِیْ اِلٰی یَوْمِ یُبْعَثُوْنَ اِسْتَجِبْ لِیْ

idh qala anzirnii ilaa yawmi yabasuuna istajiblii.

Then seek refuge in Allah from the fire of Hell Then kiss the Rukn-ul-Yamaani by pointing (Istelam).